def join(url):
    url = "www."+url+".com"
    return url
url = input("您的网站")
url01 = join(url)
print("url",url) 
print("url01",url01) 

def shop(goods_list):
    goods_list.append("OK")
    return goods_list
shop_list = ["n","m"]
"可以对shop()中的参数进行操作，之后再进行函数运行，这里就是先复制列表，然后进行函数的添加程序"
type = shop(shop_list.copy())
print(shop_list)
print(type) 